Threats Tagged 'cve-2026-6291'
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Threats Tagged 'cve-2026-6291'
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GHSA-hvwm-w7rw-23cvCVE-2026-6291 0 A Bleichenbacher padding oracle vulnerability exists in wolfSSL's PKCS#7 EnvelopedData decryption when using RSA PKCS#1 v1.5 key transport. The library returned distinguishable error codes depending on whether RSA padding validation failed or the decrypted content was malformed, allowing an attacker to use error responses as a padding oracle to recover the encrypted Content Encryption Key (CEK). The fix involves generating a deterministic pseudo-random fake CEK on padding failure and using constant-time operations to ensure all failure paths produce the same error, preventing information leakage. Join the discussion | GCVE Database | 06/25/2026, 18:30:41 UTC Added: 06/26/2026, 22:05:04 UTC |
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